package com.twotiger.and.util;

import java.io.PrintWriter;
import java.io.StringWriter;
import java.io.Writer;
import java.lang.Thread.UncaughtExceptionHandler;
import java.lang.reflect.Field;
import java.text.DateFormat;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.HashMap;
import java.util.Map;

import org.json.JSONObject;

import android.content.Context;
import android.content.SharedPreferences;
import android.content.SharedPreferences.Editor;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.PackageManager.NameNotFoundException;
import android.os.Build;
import android.os.Looper;
import android.os.Message;
import android.util.Log;
import android.widget.Toast;

import com.alibaba.fastjson.JSON;
import com.lidroid.xutils.exception.HttpException;
import com.lidroid.xutils.http.ResponseInfo;
import com.lidroid.xutils.http.callback.RequestCallBack;
import com.twotiger.and.Constants;
import com.twotiger.and.TwoTigerApp;
import com.twotiger.and.activity.base.BaseHandler;
import com.twotiger.and.bean.Basebean;

/**
 * UncaughtException处理类,当程序发生Uncaught异常的时候,有该类来接管程序,并记录发送错误报告.
 * 
 * @author user
 * 
 */
public class CrashHandler implements UncaughtExceptionHandler {
    ExceptionInfo mExceptionInfo = new ExceptionInfo();
    public static final String TAG = "CrashHandler";

    // 系统默认的UncaughtException处理类
    private UncaughtExceptionHandler mDefaultHandler;
    // CrashHandler实例
    private static CrashHandler INSTANCE = new CrashHandler();
    // 程序的Context对象
    private Context mContext;
    // 用来存储设备信息和异常信息
    private Map<String, String> infos = new HashMap<String, String>();

    // 用于格式化日期,作为日志文件名的一部分
    private DateFormat formatter = new SimpleDateFormat("yyyy-MM-dd-HH-mm-ss");
    private SharedPreferences callstack_sp;

    /** 保证只有一个CrashHandler实例 */
    private CrashHandler() {
    }

    /** 获取CrashHandler实例 ,单例模式 */
    public static CrashHandler getInstance() {
        return INSTANCE;
    }

    /**
     * 初始化
     * 
     * @param context
     */
    public void init(Context context) {
        mContext = context;
        // 获取系统默认的UncaughtException处理器
        mDefaultHandler = Thread.getDefaultUncaughtExceptionHandler();
        // 设置该CrashHandler为程序的默认处理器
        Thread.setDefaultUncaughtExceptionHandler(this);

        String sp_error_log = PreferencesUtils.getString(mContext, Constants.sp_error_log);
        if (sp_error_log != null) {
            LogUtil.info(CrashHandler.class, "错误上传.....");
            upLoadErrorLog(sp_error_log); //将上次的异常发送到服务器
        }
    }

    /**
     * 当UncaughtException发生时会转入该函数来处理
     */
    @Override
    public void uncaughtException(Thread thread, Throwable ex) {

        if (!handleException(ex) && mDefaultHandler != null) {
            // 如果用户没有处理则让系统默认的异常处理器来处理
            mDefaultHandler.uncaughtException(thread, ex);
        } else {
            try {
                Thread.sleep(3000);
            } catch (InterruptedException e) {
                Log.e(TAG, "error : ", e);
            }
            //			 退出程序 摘自ISS
            TwoTigerApp.getInstance().exit();
            android.os.Process.killProcess(android.os.Process.myPid());
            System.exit(1);
        }
    }

    /**
     * 自定义错误处理,收集错误信息 发送错误报告等操作均在此完成.
     * 
     * @param ex
     * @return true:如果处理了该异常信息;否则返回false.
     */
    private boolean handleException(Throwable ex) {
        if (ex == null) {
            return false;
        } else {
            saveErrorLogToSp(ex.toString()); //将错误信息保存到sp中,供下次启动时将错误发送到服务器
        }
        // 使用Toast来显示异常信息
        new Thread() {
            @Override
            public void run() {
                Looper.prepare();
                Toast.makeText(mContext, "很抱歉,程序出现异常,即将退出.", Toast.LENGTH_LONG).show();
                Looper.loop();
            }
        }.start();
        ex.printStackTrace();
        return true;
    }

    /**
     * 保存错误信息到sp
     * 
     * @param str
     */
    private void saveErrorLogToSp(String str) {
        String mobileInfo = Tools.getMobileInfo();
        String appVersionName = PackageUtils.getAppVersionName(mContext);
        LogUtil.info("手机信息+APP版本+错误日志:  " + mobileInfo + appVersionName + str);
        PreferencesUtils.putString(mContext, Constants.sp_error_log, mobileInfo + appVersionName
                                                                     + str);
    }

    private void upLoadErrorLog(String ex) {
        HashMap<String, String> params = new HashMap<String, String>();
        params.put("version", "2");
        String randomNumber = RandomUtils.getRandomNumbersAndLetters(32);
        String sign = Signature.getSign(params, Constants.Appkey, randomNumber);
        params.put("nonceStr", randomNumber);
        params.put("sign", sign);
        params.put("logContent", ex.toString());

        HttpUtil.doGet(mContext, Constants.ERRORLOG, params, new RequestCallBack<String>() {
            @Override
            public void onStart() {
                super.onStart();
            }

            @Override
            public void onSuccess(ResponseInfo<String> result) {
                LogUtil.info(CrashHandler.class, "错误上传成功");
                PreferencesUtils.putString(mContext, Constants.sp_error_log, null); //上传成功后将sp中的错误信息清空，避免下次重复发送
            }

            @Override
            public void onFailure(HttpException e, String result) {
                LogUtil.info(CrashHandler.class, "错误上传失败");
            }
        });

    }

    /**
     * 收集设备参数信息
     * 
     * @param ctx
     */
    public void collectDeviceInfo(Context ctx) {
        try {
            PackageManager pm = ctx.getPackageManager();
            PackageInfo pi = pm.getPackageInfo(ctx.getPackageName(), PackageManager.GET_ACTIVITIES);
            if (pi != null) {
                String versionName = pi.versionName == null ? "null" : pi.versionName;
                String versionCode = pi.versionCode + "";
                infos.put("versionName", versionName);
                infos.put("versionCode", versionCode);
            }
        } catch (NameNotFoundException e) {
            Log.e(TAG, "an error occured when collect package info", e);
        }
        Field[] fields = Build.class.getDeclaredFields();
        for (Field field : fields) {
            try {
                field.setAccessible(true);
                infos.put(field.getName(), field.get(null).toString());
                Log.d(TAG, field.getName() + " : " + field.get(null));
            } catch (Exception e) {
                Log.e(TAG, "an error occured when collect crash info", e);
            }
        }
    }

    /**
     * 保存错误信息到文件中
     * 
     * @param ex
     * @return 返回文件名称,便于将文件传送到服务器
     */
    private void saveCrashInfo2File(Throwable ex) {
        //
        // StringBuffer sb = new StringBuffer();
        // for (Map.Entry<String, String> entry : infos.entrySet()) {
        // String key = entry.getKey();
        // String value = entry.getValue();
        // sb.append(key + "=" + value + "\n");
        // LogUtil.i(TAG, key + "--->" + value);
        //
        // }
        //		mExceptionInfo.setDeviceModel(Utils.getDeviceModel());
        //		mExceptionInfo.setPlatform(Utils.getPlatform());
        //		mExceptionInfo.setVersionName(Utils.getVersionName(mContext));

        Writer writer = new StringWriter();
        PrintWriter printWriter = new PrintWriter(writer);
        ex.printStackTrace(printWriter);
        Throwable cause = ex.getCause();
        while (cause != null) {
            cause.printStackTrace(printWriter);
            cause = cause.getCause();
        }
        printWriter.close();
        String result = writer.toString();
        mExceptionInfo.setCallstack(result);
        JSONObject jsonObject = new JSONObject();
        //		String callstack = jsonObject.toJSONString(mExceptionInfo);
        //		if (callstack == null) {
        //			return;
        //		}
        // sb.append(result);
        try {
            long timestamp = System.currentTimeMillis();
            String time = formatter.format(new Date());
            String fileName = "crash-" + time + "-" + timestamp + ".log";
            //			Utils.saveExceptiontoLocal(mContext, callstack, fileName);
            // if
            // (Environment.getExternalStorageState().equals(Environment.MEDIA_MOUNTED))
            // {
            // File crash_dir = Utils.getDiskCacheDir(mContext, "crash");
            // // File dir = new File(file,);
            // if (!crash_dir.exists()) {
            // crash_dir.mkdirs();
            // }
            // File file = new File(crash_dir, fileName);
            // if (!file.exists()) {
            // file.createNewFile();
            // }
            // FileOutputStream fos = new FileOutputStream(path + fileName);
            // fos.write(callstack.getBytes());
            // fos.close();
            // }
            //			callstack_sp = mContext.getSharedPreferences(Constant.STACK_PREFERENCES, Context.MODE_PRIVATE);
            Editor edit = callstack_sp.edit();
            edit.putString("lastCallstack", fileName);
            edit.putBoolean("isUploaded", false);
            edit.commit();
            // return fileName;
        } catch (Exception e) {
            Log.e(TAG, "an error occured while writing file...", e);
        }
        // return null;
    }
}
